Verified by a series of rigorous tests including non-uniform snow-load test, extreme DML test and extreme wind tunnel test, Trina Solar’s Vertex modules continue to show outstanding performance and excellent mechanical load reliability by passing a -40°C extreme low-temperature mechanical load test, demonstrating excellent ability to withstand extreme cold conditions.

test site (Image: Trina Solar)

Trina Solar’s modules are applied worldwide in various scenarios including those under extreme cold weather conditions, from Heilongjiang in China to the countries within the Arctic Circle such as Sweden and Norway, where the average winter temperature is as low as -40°C.

Thus, it is fundamental for Vertex modules to maintain high reliability and high power generation efficiency under low-temperature conditions. The extreme low temperature is a major challenge to materials. The coefficient of thermal expansion varies among different materials and poses challenges to connecting parts of modules. For those organic materials such as EVA, backsheet and junction boxes, the low temperature will cause degrading shock resistant ability of materials and affect the ability to withstand mechanical load of module cells.

The temperature of testing environment (Image: Trina Solar) 

Trina Solar, together with the third-party organization CGC (China General Certification), conducted the mechanical reliability test to Vertex 670W module under extreme low-temperature conditions according to the testing requirement of IEC TS 62782. The static mechanical load test of 5400Pa at front side and 2400Pa at back side was completed under extreme low-temperature of-40°C and crossbeam screw installation conditions. The mechanical strength, resistant ability of materials and connection of trackers under extreme low temperature were simulated to test the reliability and performance of PV modules.

No variation in electroluminescence (EL) before (top) and after the test (bottom)
(Image: Trina Solar) 

The results show that the modules maintain in good appearance without cracks. They also passed the insulation and wet leakage tests with power attenuation of only 0.11%. This clearly proves that even under extreme low-temperature conditions, Trina Solar’s 670W Vertex modules are safe and reliable, and guarantee excellent quality.

Based on large 210mm silicon wafers, the Vertex 670W was launched in March 2021. It has low-voltage and high-power and inherits the non-destructive cutting and high-density interconnection, achieving maximum power of 670W with an efficiency of 21.6%, single string power rising by 40%, creating more room for reduction of the LCOE and BOS cost.

Vertex modules in extreme cold weather (Image: Trina Solar) 

Based on the R&D and manufacturing experience for the past 24 years, Trina Solar has been able to lay solid foundation in technology and forge products with high efficiency and high reliability that possess world’s best performance. No matter whether it is stronger winds, snowstorms or extreme cold, Trina Solar’s Vertex modules exhibit perfect performance and offer customized services including product design and installation design for different application scenarios to provide various total solutions for customers.